scholarly journals New cine magnetic resonance imaging parameters for the differential diagnosis of chronic intestinal pseudo-obstruction

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hiroki Sato ◽  
Hiroyuki Ogihara ◽  
Kazuya Takahashi ◽  
Yuzo Kawata ◽  
Yuichi Kojima ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intestinal Motility ◽  
Treatment Decision ◽  
Wide Distribution ◽  
Cine Magnetic Resonance Imaging ◽  
Cine Mri ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Intestinal Pseudo Obstruction

AbstractChronic intestinal pseudo-obstruction (CIPO) is a severe and refractory intestinal motility disorder whose diagnosis currently relies on subjective imaging assessments. Cine magnetic resonance imaging (MRI) may potentially improve the quantitative analysis of gastrointestinal motility; however, suitable CIPO detection parameters should be determined. Cine MRI was performed in seven patients with CIPO and 11 healthy controls. The logarithm of the Mahalanobis distance (x1) and distance variation per time (x2) were used as the original parameters to determine CIPO diagnostic thresholds. Furthermore, the correlation between cine MRI findings and CIPO severity was investigated. Threshold values of α = 1.10 and β = 0.15 for x1 and x2, respectively, produced a CIPO diagnosis sensitivity of 1.00 (7/7) and specificity of 0.82 (9/11). The resulting error was 0.11 (2/18). The two parameters were correlated (Pearson’s correlation coefficient: − 0.52). Any of the intestinal tracts of patients with severe CIPO requiring home parenteral nutrition belonged to the region defined by x1 ≥ 1.10 and x2 ≤ 0.15. Cine MRI is effective for the quantitative evaluation of small intestinal motility and CIPO diagnosis when using the abovementioned parameters and can be useful for treatment decision-making. However, these parameters have a wide distribution in healthy volunteers; this may complicate the detection of other disorders.

scholarly journals Validation of New Cine Magnetic Resonance Imaging Parameters For The Differential Diagnosis of Chronic Idiopathic Intestinal Pseudo-Obstruction

2021 ◽  
Author(s):  
Hiroki Sato ◽  
Hiroyuki Ogiwara ◽  
Kazuya Takahashi ◽  
Yuzo Kawata ◽  
Yuichi Kojima ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intestinal Motility ◽  
Treatment Decision ◽  
Wide Distribution ◽  
Cine Magnetic Resonance Imaging ◽  
Cine Mri ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Intestinal Pseudo Obstruction

Abstract Chronic idiopathic pseudo-obstruction (CIPO) is a severe and refractory intestinal motility disorder whose diagnosis currently relies on subjective imaging assessments. Cine magnetic resonance imaging (MRI) may potentially improve the quantitative analysis of gastrointestinal motility; however, suitable CIPO detection parameters should be determined.Cine MRI was performed in seven patients with CIPO and 11 healthy controls. The logarithm of the Mahalanobis distance (x1) and luminal distance variation per time (x2) were used as the original parameters to determine CIPO diagnostic thresholds. Furthermore, the correlation between cine MRI findings and CIPO severity was investigated.Threshold values of α=1.10 and β=0.15 for x1 and x2, respectively, produced a CIPO diagnosis sensitivity of 1.00 (7/7) and specificity of 0.82 (9/11). The resulting error was 0.11 (2/18). The two parameters were correlated (Pearson’s correlation coefficient: -0.52). The intestinal tracts of patients with severe CIPO requiring home parenteral nutrition belonged to the category defined by x1 ≥1.10 and x2 ≤0.15.Cine MRI is effective for the quantitative evaluation of small intestinal motility and CIPO diagnosis when using the abovementioned parameters and can be useful for treatment decision-making. However, these parameters have a wide distribution in healthy volunteers; this may complicate the detection of other disorders.

scholarly journals Assessment of abdominal organ motion using cine magnetic resonance imaging in different gastric motilities: a comparison between fasting and postprandial states

2019 ◽  
Vol 60 (6) ◽  
pp. 837-843 ◽  
Author(s):  
Hotaka Nonaka ◽  
Hiroshi Onishi ◽  
Makoto Watanabe ◽  
Vu Hong Nam
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Pancreatic Head ◽  
Cine Magnetic Resonance Imaging ◽  
Organ Motion ◽  
Cine Mri ◽  
Abdominal Organ ◽  
Resonance Imaging ◽  
Duodenal Motility ◽  
Postprandial State

Abstract This study assessed abdominal organ motion induced by gastroduodenal motilities in volunteers during fasting and postprandial states, using cine magnetic resonance imaging (cine-MRI). Thirty-five volunteers underwent cine-MRI while holding their breath in the fasting and postprandial states. Gastric motility was quantified by the amplitude and velocity of antral peristaltic waves. Duodenal motility was evaluated as the change of duodenal diameter. Abdominal organ motion was measured in the liver, pancreas and kidneys. Motion was quantified by calculating maximal organ displacement in the left–right, antero–posterior and caudal–cranial directions. Median antral amplitude and velocity in the fasting and postprandial states were 7.7 and 15.1 mm (P < 0.01), and 1.3 and 2.5 mm/s (P < 0.01), respectively. Duodenal motility did not change. Median displacement for all organs ranged from 0.9 to 2.9 mm in the fasting state and from 1.0 to 2.9 mm in the postprandial state. Significant increases in abdominal organ displacement in the postprandial state were observed in the right lobe of the liver, pancreatic head and both kidneys. Differences in the median displacement of these organs between the two states were all <1 mm. Although the motion of several abdominal organs increased in the postprandial state, the difference between the two states was quite small. Thus, our study suggests that treatment planning and irradiation need not include strict management of gastric conditions, nor the addition of excess margins to compensate for differences in the intra-fractional abdominal organ motion under different gastric motilities in the fasting and postprandial states.

Prostate gland motion assessed with cine-magnetic resonance imaging (cine-MRI)

2005 ◽  
Vol 62 (2) ◽  
pp. 406-417 ◽  
Author(s):  
Michel J. Ghilezan ◽  
David A. Jaffray ◽  
Jeffrey H. Siewerdsen ◽  
Marcel Van Herk ◽  
Anil Shetty ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Prostate Gland ◽  
Cine Magnetic Resonance Imaging ◽  
Cine Mri ◽  
Resonance Imaging

scholarly journals Easy Diagnosis of Aortic Invasion in Patients with Lung Cancer Using Cine Magnetic Resonance Imaging

2015 ◽  
Vol 8 (2) ◽  
pp. 308-311 ◽  
Author(s):  
Hidetaka Uramoto ◽  
Hiroyasu Kinoshita ◽  
Yuki Nakajima ◽  
Hirohiko Akiyama
Keyword(s):  
Magnetic Resonance Imaging ◽  
Lung Cancer ◽  
Magnetic Resonance ◽  
Lung Tumor ◽  
Locally Advanced ◽  
Cine Magnetic Resonance Imaging ◽  
Advanced Lung Cancer ◽  
Cine Mri ◽  
Resonance Imaging ◽  
Adjacent Structures

Selecting the proper treatment strategy for locally advanced lung cancer, such as T4 tumors, is difficult. Therefore, obtaining an accurate diagnosis of T4 tumors is required. It can be difficult to determine whether the tumor invades adjacent structures. We describe the case of a patient easily diagnosed to be without aortic invasion using cine magnetic resonance imaging (MRI). We herein report the case of an 80-year-old male who presented a lung tumor. The transbronchial lung washing cytology findings were consistent with those of adenocarcinoma. In addition, the computed tomography findings indicated suspected aortic invasion of the lung tumor, as the mass girdled the descending aorta beyond 120° adjoining at a length of 10 cm. However, cine MRI display clearly demonstrated a clear area of isolation between the aorta and lung tissue based on differences in the heart rhythm from the patient's respiratory movements. Therefore, the lesion was clinically diagnosed as a stage IIB (T3N0M0) tumor. Radiation was administered due to the patient's advanced age and comorbidities such as chronic obstructive pulmonary disease. He remains alive without disease progression 6 months after the therapy. Our findings, therefore, indicate the usefulness of easily diagnosing the absence of aortic invasion in patients with lung cancer using cine MRI without the need for a special software program.

scholarly journals Fundamental Tongue Motions for Trumpet Playing: A Study Using Cine Magnetic Resonance Imaging (Cine MRI)

2017 ◽  
Vol 32 (4) ◽  
pp. 201-208 ◽  
Author(s):  
Hiroko Furuhashi ◽  
Toru Chikui ◽  
Daisuke Inadomi ◽  
Tomoko Shiraishi ◽  
Kazunori Yoshiura
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cine Magnetic Resonance Imaging ◽  
Cine Mri ◽  
Resonance Imaging ◽  
Anatomical Structures ◽  
Custom Made ◽  
Tongue Movements ◽  
Trumpet Performance ◽  
Trumpet Players

OBJECTIVE: Though the motions of structures outside the mouth in trumpet performance have been reported, the dynamics of intraoral structures remain unelucidated. This study explored the tongue’s movement in trumpet playing using cine magnetic resonance imaging (cine MRI) and demonstrated the effects of intraoral anatomical structures on changes in pitch and dynamics. METHODS: Cine MRI was applied to 18 trumpet players, who were divided into two groups (7 beginner, 11 advanced) based on their ability to play a certain high note. They were instructed to play a custom-made MRI-compatible simulated trumpet. Pitch-change tasks and dynamics-change tasks were assigned. The positions of the anatomical points and intraoral areas were identified on outlined images, and the changes associated with each task were evaluated. RESULTS: A forward and upward projection of the tongue was observed in the production of higher pitches, and there were no significant differences in all areas. In louder dynamics, a backward and downward bending of the tongue occurred, the tongue area became smaller (p<0.001), and the oral cavity area became larger (p<0.001). No significant differences between beginner and advanced trumpet players were seen in the changes in pitch and dynamics. CONCLUSION: It was demonstrated using cine MRI that certain tongue movements were associated with each task. Tongue protrusion in the production of higher pitch and bending in louder dynamics can be rationalized using acoustics theory and the movements of anatomical structures. These findings seem to be consistent regardless of the player’s proficiency.

Computed Tomography and Magnetic Resonance Imaging-aided Diagnosis of Primary Essential Cutis Verticis Gyrata: A Case Report with 5-year Follow-up and Review of the Literature

2019 ◽  
Vol 15 (9) ◽  
pp. 906-910
Author(s):  
Hongzhang Zhu ◽  
Shi-Ting Feng ◽  
Xingqi Zhang ◽  
Zunfu Ke ◽  
Ruixi Zeng ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Three Dimensional ◽  
Stable Condition ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Cutis Verticis Gyrata ◽  
Essential Form ◽  
History Of ◽  
Magnetic Resonance Imaging Mri

Background: Cutis Verticis Gyrata (CVG) is a rare skin disease caused by overgrowth of the scalp, presenting as cerebriform folds and wrinkles. CVG can be classified into two forms: primary (essential and non-essential) and secondary. The primary non-essential form is often associated with neurological and ophthalmological abnormalities, while the primary essential form occurs without associated comorbidities. Discussion: We report on a rare case of primary essential CVG with a 4-year history of normal-colored scalp skin mass in the parietal-occipital region without symptom in a 34-year-old male patient, retrospectively summarizing his pathological and Computer Tomography (CT) and magnetic resonance imaging (MRI) findings. The major clinical observations on the CT and MR sectional images include a thickened dermis and excessive growth of the scalp, forming the characteristic scalp folds. With the help of CT and MRI Three-dimensional (3D) reconstruction techniques, the characteristic skin changes could be displayed intuitively, providing more evidence for a diagnosis of CVG. At the 5-year followup, there were no obvious changes in the lesion. Conclusion: Based on our observations, we propose that not all patients with primary essential CVG need surgical intervention, and continuous clinical observation should be an appropriate therapy for those in stable condition.

scholarly journals Balo’s Concentric Sclerosis Mimicking Tumor on Magnetic Resonance Imaging in a Young Patient

2021 ◽  
Vol 14 ◽  
pp. 117954762198967
Author(s):  
Van Trung Hoang ◽  
Cong Thao Trinh ◽  
Hoang Anh Thi Van ◽  
Thanh Tam Thi Nguyen ◽  
Vichit Chansomphou ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Demyelinating Disease ◽  
Management Strategies ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Demyelinating Lesions ◽  
Baló’S Concentric Sclerosis ◽  
Magnetic Resonance Imaging Mri ◽  
Subcortical Regions

Balo’s concentric sclerosis (BCS) is a rare demyelinating disease known as Multiple Sclerosis (MS) lesion type III. It is a disease of the white matter of the brain characterized by a round lesion with variable concentric myelinated and demyelinated layers, appearing as “onion bulb.” We present a case of BCS and discuss the imaging findings and management strategies of this disease. A 26-y-old male developed headache, weakness, and numbness of limbs. Magnetic resonance imaging (MRI) showed concentric lamellar like demyelinating lesions at the subcortical regions. The patient’s neurological symptoms were consistent with the MRI findings.

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